(1) A variable used to pass information, such as a file name, for use in a message.
(2) In pseudo-JCL, a symbol that is used in a build script and that receives a value from a build server default, from the build script itself, or from a symbolic parameter.
(3) A variable in a procedure or query whose value is specified either by a global variable or by a runtime variable.
(4) A variable in a form whose value is specified by a global variable.